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weeeeeb [17]
2 years ago
11

Is the point (5, -7) a solution to the equation Y > -2x + 3

Mathematics
1 answer:
nordsb [41]2 years ago
3 0
No,isn’t solution
-7>-2*5+3
-7>-7 wrong
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Cheese pizzas cost $7 and pepperoni pizzas cost $9. You order a total of 40 pizzas and the bill is $310. How many of each pizza
Anon25 [30]

Answer: cheese pizzas = 25 , Pepperoni pizzas = 15

Step-by-step explanation:

Let x = Number of cheese pizzas, y =  Number of pepperoni pizzas.

As per given,

x+y=40\ \ \ (i)\\\\ 7x+9y=310\ \ \ (ii)

Multiply 7 on both sides of (i), we get

7x+7y=280\ \ \ (iii)

Eliminate (iii) from (ii), we get

2y= 30\\\\\Rightarrow\ y=15

Put value of y in (i) ,  x+15=40\Rightarrow\ x= 40-15= 25

Hence, cheese pizzas = 25 , Pepperoni pizzas = 15

8 0
3 years ago
How do you solve this step by step?
kolezko [41]

Answer:

90

Step-by-step explanation:

Evaluate x^2 + 2 x^2 + 3 x^2 + 4 x^2 where x = 3:

x^2 + 2 x^2 + 3 x^2 + 4 x^2 = 3^2 + 2×3^2 + 3×3^2 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×3^2 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×9 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×9 + 4×9

3^2 = 9:

9 + 2×9 + 3×9 + 4×9

2×9 = 18:

9 + 18 + 3×9 + 4×9

3×9 = 27:

9 + 18 + 27 + 4×9

4×9 = 36:

9 + 18 + 27 + 36

| 3 |  

| 3 | 6

| 2 | 7

| 1 | 8

+ | | 9

| 9 | 0:

Answer:  90

5 0
3 years ago
Read 2 more answers
Which equation represents a population of 490 animals that increases at an annual rate of 20% ?
Readme [11.4K]

Answer:

Step-by-step explanation:

The standard form of this exponential function is

y=a(b)^x where a is the initial value and b is the growth rate. Our initial value is 490 and our growth rate is .2 so the equation is

y=490(.2)^x

8 0
2 years ago
I NEED THIS ANSWERED ASAPPPPPP!!!!!!!!!!!!!1111 THANKS
Katyanochek1 [597]
The division is using extra zeros.
2 * 16  = 32, but 3200 was placed below 3426.

Now 1 * 16 = 16, so 160 goes below 226.
The number that goes in the box is 160.
8 0
3 years ago
Please someone right now please 10x23-9+90(23-9)
Burka [1]

Answer:

1481

Step-by-step explanation:

8 0
2 years ago
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